Delete lifo

Purpose: Delete LIFO list elements.

 delete-lifo <list>

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delete-lifo will delete the most recently added elements to the LIFO <list> up to the last one read, including. <list> was created by new-lifo.

Right after rewind-lifo, no element was read yet, and delete-lifo will have no effect. Note that write-lifo also performs an implicit rewind-lifo.

After any read-lifo, delete-lifo wil delete all elements up to the element read, including that element.

Examples

 new-lifo mylist

 // Add data to the list
 write-lifo mylist key "key1" value "value1"
 write-lifo mylist key "some2" value "other2"

 // Get first data from the list, it will be "some2" key
 read-lifo mylist key k value v

 // Delete first element from the list, so list will have only "key1" key
 delete-lifo mylist

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